Brush



June 16, 1936. R. SCHUMANN BRUSH Filed May 24, 1935 1 INVENTOR.Lamas/v0: H. E'QHL/MHNN ATTORNEY.

Patented June 16, 1936 STATES BRUSH Application May 24,

2 Claims.

My present invention relates to brushes, such as used in applyingpolishing compositions, such as wax, shellac, varnish, stain, etc., tofloors or other surfaces, and as will become hereinafter more apparent,brushes embodying my invention may be used for various other purposes.

The principal general object of my invention is to provide a brushhaving a relatively simple sturdy holding element to firmly receive thebristles by an easy and quick operation so that the bristles may be usedor applied to surfaces without relative movement between them and theholder at the points where they are joined.

More specifically, the objects of the invention are to provide asubstantially unitary holder having a relatively long open channellocated transversely to the socket or other coupling to receive ahandle, a part of said member being open so that the bristles mayproject therethru, Preferably both ends of the member are open toreceive the upper ends of the bristles which are bound or encircled by aband, preferably metal, and the relative dimensions of the channelWithin the holder and of the encircling band are such that the band withthe bristles carried thereby can be moved into one of the open ends ofthe member and longitudinally along said channel, making multi-pointcontact with the inner face of the member defining the channel toprevent relative movements between the holder and the band when thebrush is used in the usual manner.

The foregoing and other objects and advantages of the invention will bepointed out during the course of the following detailed description ofthe accompanying drawing, in which:

Fig. 1 is a perspective view of a brush embodying my invention, and afragment of the handle;

Fig. 2 is an enlarged end View of the holder of Fig. 1 and encirclingband showing a fragment of the handle receiving socket;

Fig. 3 is a transverse vertical sectional view thru the holderencircling band and bristles of Fig. l; and

Figs. 4 and 5 are views similar to Fig. 3, showing modifications of theinvention.

Referring to Figs. 1-3, the letter B designates the bristles, which arepreferably secured together at their top by embedding the tops in rubberor other suitable binding compound, and the numeral 6 designates theencircling band, which is arranged around the tops of the bristles wherethey are set or joined together, and also secured to the tops of thebristles, so that the band and bristles form a unit. Preferably the1935, Serial No. 23,295

bristles B are arranged in a relatively wide group, and the band 6 hasrelatively long front and back portions 7 and 8 joined by the curvedends 9.

The holder for the united band and bristles comprises a relatively longmember ill in the nature of a split tube and provided with a socket orattaching element H to receive the handle H. The socket H may be formedas a part of the member ill, that is, both parts l0 and [I may be formedfrom a single blank, or the member ill may be a split tube with thesocket ll provided with a curved end l2 to fit around a portion of themember Ill to be secured thereto by welding or soldering.

Referring particularly to Figs. 2 and 3 it will be noted that the loweredges I3 of the split tube or member iii are spaced apart a distancesubstantially equal to the thickness of the set of bristles, and alsoslightly less than the width of the encircling band 6. It will also benoted that the channel Hi within the member Ill is of a depth slightlygreater than the height of the band 6 so that the band 6 and the tuftedbristles B carried thereby may be inserted longitudinally of the holderl8 by pushing one end of the band 6 into the channel I l and thensliding the band along the channel until the curved ends 9 aresubstantially flush with the ends of the holder it. Obviously, it is notessential to have the holder ill of the same length as the encirclingband, because if desired the ends 9 may project slightly outwardly fromthe ends of the holder H3, or may be disposed within the holder.However, when the length of the band 6 and tuft of bristles issubstantially the same as the length of the holder Ill, the assembledbrush provides a more attractive and neat appearance.

It will be noted that the upper edge of the encircling band 6 makes linecontact with the inner face of tube H! at two places, designated by thenumeral l5, and at opposite sides of the channel I l adjacent the topthereof; and that similar point contact is made at IS with the innerwall of the holder l0 adjacent the extremities l3. Furthermore, therelative dimensions of the channel l4 and the encircling band 6 are suchthat the line contacts referred to, which of course extend all along theinner surface of the holder in, is sufficiently snug or tight as topre-- vent relative rotational or endwise movement of the band 6relative to the holder l0 under the usual forces or stresses exertedwhen the brush is in use.

Although the parts, as above described, are relatively so constructedand arranged as to provide upon assembly a brush capable of use inapplying wax to floors, or paints, white-washes, and the like, to walls,or to adapt the brush to use in dusting; if desired, spots of solder maybe placed between the outer surface of the band 6 and the inner wall ofthe holder It, as designated by the numeral IT in Fig. 2 to more or lesspermanently unite the encircling band and holder.

The use of the solder I1 is not necessary when the split tube I0 is madeof metal of both sufii cient strength and resiliency to permit the band6 to be pushed therein along channel M in the manner shown and describedand to 'firmlyhgrip said band, with the multi-point contact establishedafter insertion of. the band. In this'con-- nection it is preferable to.have the metal or material of band 6 of such nature as to take the gripof edges l3, as well as at points |5,to es-;-

tablish stabilization between the parts when the brush is in actual use.I might also explain that the normal or natural use of the brush wouldbe to move the free ends of the bristles over a surface located in aplane transverse to the longitudinal vertical plane of the set ofbristles. The leverage in such case would be such that the power wouldbe applied at the free ends of the yieldable bristles, tending to, butnot capable of turning the band 6 along edges l3 as a fulcrum,

since'the point or linecontacts 15 would prevent In Fig. 4, I have showna modification wherein the walls I and 8', corresponding to walls I and8, but slightly deeper than the walls I and 8 of Figs. 1-3, are providedadjacent their lower edges with grooves l8 which receive longitudinaledges l3 of the holder ID. The manner of assembling the parts shown inFig. 4 is the sameas described in connection withthose of. Figs. 1-3,that is, the encircling band is positioned relatively to the open end ofthe grooves. l4 so as to establish the, grooves l8 inalinement with the.edges. l3 to receive said edges.v When the encircling band has beeninserted within the holder, the multi-., point or line contactpreviously mentioned is also obtained for thepurpose specified.

In Fig. 5, the holder l0", which is the. same as holders .ID and Ill,receives an encircling. band having. long walls 'I" and 8", on each ofwhich is formed a bead [9 at pointsslightly above'the points where thechannels l8 are provided on the band 1', so thatwhen the encircling.band is insertedlinto the holder ID", the lower. extremities I3 of theholder willengage under the beads l9 to firmly hold the encircling bandand bristles carried thereby against rotational movement in the holderand against accidental dis placement therefrom during use of the brush.Of course the solder, as explained in connection with Fig. 2, may alsobe used in the structures of Figs. 4 and 5, if desired.

I claim:

1. In a brush of the character described, including a relatively wideset of bristles, a band encircling the bristles at one end thereof andunited to said set of bristles, and forming therewith a brush headsubstantially rectangular in cross section, a holder for said unitedband and bristles in the nature of an open ended, substantiallycylindricaL tube having a channel therein, said tube having a slot inits wall from end to end and ofv a width substantially the same as thethickness of the set of bristles, the relative cross-sectional shape andsize of said channel and encircling band being such as to provide linecontact between the outer edges of said band and inner wall of the tubewhen the. band is moved into and along the channel with the bristlesprojecting thru the slot, and with the edges of the holder along theslot gripping the band to firmly hold said band and bristles carriedthereby in said holder against movement rela tive to the holder duringuse of the brush.

2. In a brush of the character described, including a relatively wideset of bristles, a band encircling the bristles at one end thereof andunited to said set of bristles, and forming therewith a brush headsubstantially rectangular in cross section, a holder for said unitedband and bristles in the nature of an open ended substantiallycylindrical tube having a channel. therein,

said tube having a slot therein from end to end and of a widthsubstantially the same as the thickness of the set of bristles, therelative crosssectional shape and size of said channel and encirclingband-being such as to provide line contact betweenthe upper edges ofsaid band and inner wall of the tube when the band is moved into andalong the channel with the bristles projecting thru the slot, said bandbeing deformed to provide elements to engage the edges of the holder onopposite sides of the slot in spaced relation to said edges, tofirmly-hold said band and bristles carried thereby in said holderagainst movement relative to the holder during use of the brush, saidedges of the holder along the slot gripping the band to firmly hold saidband and bristles carried thereby in said holder against movementrelative to the holder during use of the brush.

LAWRENCE R. SCI-IUMANN:

